Hi,
When you have an SBR Rubber and you do a dielectric strength test on it (to ASTM D149) you get some strength for a given thickness, my question is, if you compress that, like when SBR is used as gasketing in flanges, does the dielectric strength change at all? Or is it just that it gets thinner so the gross voltage it can take reduces?
Per my current understanding, SBR is incompressible, so it shouldn't lose density when used as a gasket, so the strength rating should remain the same, can anyone confirm this? As a second question, since its incompressible then won't all standard gasket thicknesses (1/16, 1/8, 3/16) have the same result from the dielectric strength test? I can't find data to say one way or the other.
Thanks
When you have an SBR Rubber and you do a dielectric strength test on it (to ASTM D149) you get some strength for a given thickness, my question is, if you compress that, like when SBR is used as gasketing in flanges, does the dielectric strength change at all? Or is it just that it gets thinner so the gross voltage it can take reduces?
Per my current understanding, SBR is incompressible, so it shouldn't lose density when used as a gasket, so the strength rating should remain the same, can anyone confirm this? As a second question, since its incompressible then won't all standard gasket thicknesses (1/16, 1/8, 3/16) have the same result from the dielectric strength test? I can't find data to say one way or the other.
Thanks